Bump file-loader from 5.0.2 to 6.0.0

Bumps [file-loader](https://github.com/webpack-contrib/file-loader) from 5.0.2 to 6.0.0.
- [Release notes](https://github.com/webpack-contrib/file-loader/releases)
- [Changelog](https://github.com/webpack-contrib/file-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/file-loader/compare/v5.0.2...v6.0.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -52,7 +52,7 @@
     "eslint-plugin-jest": "^23.8.2",
     "eslint-plugin-prettier": "^3.1.2",
     "eslint-plugin-react": "^7.19.0",
-    "file-loader": "^5.0.2",
+    "file-loader": "^6.0.0",
     "html-webpack-plugin": "^3.2.0",
     "jest": "^24.1.0",
     "mini-css-extract-plugin": "^0.9.0",